49187499 has 8 divisors (see below), whose sum is σ = 65615760. Its totient is φ = 32775456.

The previous prime is 49187497. The next prime is 49187507. The reversal of 49187499 is 99478194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49187499 - 2¹ = 49187497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49187491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9517 + ... + 13745.

It is an arithmetic number, because the mean of its divisors is an integer number (8201970).

Almost surely, 2^49187499 is an apocalyptic number.

49187499 is a deficient number, since it is larger than the sum of its proper divisors (16428261).

49187499 is a wasteful number, since it uses less digits than its factorization.

49187499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8109.

The product of its digits is 653184, while the sum is 51.

The square root of 49187499 is about 7013.3799982605. The cubic root of 49187499 is about 366.3967226169.

It can be divided in two parts, 491 and 87499, that added together give a triangular number (87990 = T₄₁₉).

The spelling of 49187499 in words is "forty-nine million, one hundred eighty-seven thousand, four hundred ninety-nine".